The use of artificial temporary streams with and without shelters by Japanese dace Tribolodon hakonensis
The use of artificial temporary streams with and without shelters by Japanese dace Tribolodon hakonensis
复制标题
日本鲮鱼箱根鲮 (Tribolodon hakonensis) 对有或无庇护所的人工临时溪流的使用
DOI：
10.1046/j.1444-2906.2001.00196.x
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发表时间：
2001
影响因子：
1.9
通讯作者：
N. Matsubara
中科院分区：
文献类型：
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作者：
O. Katano;Y. Aonuma;N. Matsubara
摘要：为了了解鱼类如何使用临时溪流，我们建立了有或没有庇护所的人工临时溪流，并调查了从相连的永久溪流中栖息的鱼类。 5月至9月的四个采样期共捕获了6种220条鱼类，其中箱根鲮鲮的数量最多（75%）。有庇护所的日本鲮鱼数量多于没有庇护所的鲮鱼。在有遮蔽物的溪流中，日本鲮鱼的标准长度和状况往往比没有遮蔽物的情况要大。两条溪流中鲮鱼的觅食行为和区域存在显着差异；更多日本鲮鱼在无遮蔽的溪流入口附近采用漂流喂食。日本鲮鱼主要以摇蚊幼虫为食，七月份溪流泥中的摇蚊幼虫变得丰富。但8月和9月，鲮鱼很少捕食摇蚊幼虫，消化道充盈度较低，可能是因为大部分摇蚊幼虫已被吃掉。这种趋势在有庇护所的溪流中更为突出。日本鲮鱼对临时水域的使用会随着摇蚊幼虫的丰富度和庇护所的存在或不存在而动态变化。
SUMMARY: In order to know how fish use temporary streams, we set up artificial temporary streams with and without shelters and investigated the fish that colonized there from connected permanent streams. A total of 220 fish belonging to six species were captured over four sampling periods from May to September, with Japanese dace Tribolodon hakonensis being the most abundant (75%). More Japanese dace colonized the stream with shelters than without shelters. The standard length and condition of Japanese dace tended to be greater in the stream with shelters than without shelters. Foraging behavior and area of Japanese dace differed significantly between the two streams; more Japanese dace employing drift feeding near the entrance of the shelterless stream. Japanese dace predominantly fed upon chironomid larvae, which became abundant in stream mud in July. However, in August and September, Japanese dace rarely preyed upon chironomid larvae and their digestive canal fullness was low, probably because most chironomid larvae had been consumed. This tendency was more prominent in the stream with shelters. The use of temporary waters by Japanese dace changed dynamically in response to the abundance of chironomid larvae and the presence or absence of shelters.
J.Chem.Soc.，Chem.Commun.(1983)
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